COSRX Master Patch Basic_90ea is a comfortable spot treatment to tackle breakouts. Master Patch Basic works for any acne, any skin. Size: 12mm Patches. It contains 90 patches. 100% high-quality hydrocolloid suitable for all skin types. Cut lines for easy application. Apply on to your acne, instead of popping, to resolve the pimple quickly with no scars. 12mm round spot to blend into the skin naturally and comfortably for day and night use. Skinsider is an authorised seller of COSRX cosmetics in the UK & EU. Curious about more COSRX products or our entire Spot Treatment range? Skinsider offers you the key to healthy and glowing skin. Start your journey now with Korean Skincare and discover more K-beauty now!